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<h1>Io Reference</h1>
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<a class='column' href='../../index.html'>Databases</a>
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<a class='column' href='../index.html'>QDBM</a>
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<b>QDBM</b>
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<td>An ordered key/value database that supports transactions and arbitrary kay and value sizes.
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<a name="QDBM-abort"></a><b>
abort
</b>
<p>
<div class=slotDescription>
Abort transaction. Returns self
</div>
<a name="QDBM-at"></a><b>
at(keySymbol)
</b>
<p>
<div class=slotDescription>
Returns a Sequence for the value at the given key or nil if there is no such key.
</div>
<a name="QDBM-atPut"></a><b>
atPut(keySymbol, valueSequence)
</b>
<p>
<div class=slotDescription>
Sets the value of valueSequence with the key keySymbol. Returns self.
</div>
<a name="QDBM-atRemove"></a><b>
atRemove(keySymbol)
</b>
<p>
<div class=slotDescription>
Removes the specified key. Returns self
</div>
<a name="QDBM-begin"></a><b>
begin
</b>
<p>
<div class=slotDescription>
Begin transaction. Returns self
</div>
<a name="QDBM-close"></a><b>
close
</b>
<p>
<div class=slotDescription>
Closes the database.
</div>
<a name="QDBM-commit"></a><b>
commit
</b>
<p>
<div class=slotDescription>
Commit transaction. Returns self
</div>
<a name="QDBM-cursorFirst"></a><b>
cursorFirst
</b>
<p>
<div class=slotDescription>
Move cursor to first record. Returns self
</div>
<a name="QDBM-cursorJumpBackward"></a><b>
cursorJumpBackward(key)
</b>
<p>
<div class=slotDescription>
Move cursor to previous record around key. Returns self
</div>
<a name="QDBM-cursorJumpForward"></a><b>
cursorJumpForward(key)
</b>
<p>
<div class=slotDescription>
Move cursor to next record around key. Returns self
</div>
<a name="QDBM-cursorKey"></a><b>
cursorKey
</b>
<p>
<div class=slotDescription>
Returns current cursor key or nil.
</div>
<a name="QDBM-cursorLast"></a><b>
cursorLast
</b>
<p>
<div class=slotDescription>
Move cursor to last record. Returns self
</div>
<a name="QDBM-cursorNext"></a><b>
cursorNext
</b>
<p>
<div class=slotDescription>
Move cursor to next record. Returns true if there is another key, 
	or false if there is no next record.
</div>
<a name="QDBM-cursorPrevious"></a><b>
cursorPrevious
</b>
<p>
<div class=slotDescription>
Move cursor to previous record. Returns true if there is another key, 
	or false if there is no previous record.
</div>
<a name="QDBM-cursorPut"></a><b>
cursorPut(value)
</b>
<p>
<div class=slotDescription>
Sets the value at the current cursor postion. Returns self.
</div>
<a name="QDBM-cursorRemove"></a><b>
cursorRemove
</b>
<p>
<div class=slotDescription>
Removes the current cursor postion. Returns self.
</div>
<a name="QDBM-cursorValue"></a><b>
cursorValue
</b>
<p>
<div class=slotDescription>
Returns current cursor value or nil.
</div>
<a name="QDBM-name"></a><b>
name
</b>
<p>
<div class=slotDescription>
Returns the name of the database.
</div>
<a name="QDBM-open"></a><b>
open(path)
</b>
<p>
<div class=slotDescription>
Opens the database.
</div>
<a name="QDBM-optimize"></a><b>
optimize
</b>
<p>
<div class=slotDescription>
Optimizes the database. Returns self
</div>
<a name="QDBM-size"></a><b>
size
</b>
<p>
<div class=slotDescription>
Returns number of records in database. Returns self
</div>
<a name="QDBM-sizeAt"></a><b>
sizeAt(keySymbol)
</b>
<p>
<div class=slotDescription>
Returns the size of the value at the given key or nil if there is no such key.
</div>
<a name="QDBM-sync"></a><b>
sync
</b>
<p>
<div class=slotDescription>
Syncs the database. Returns self
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